Waste Water Engineering If the depletion of oxygen is found to be 5 ppm after incubating a 2.5% solution of sewage sample for 5 days at 21°C, B.O.D. of the sewage is 150 ppm 50 ppm 100 ppm 200 ppm 150 ppm 50 ppm 100 ppm 200 ppm ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering A sewer pipe contains 1 mm sand particles of specific gravity 2.65 and 5 mm organic particles of specific gravity 1.2, the minimum velocity required for removing the sewerage, is 0.45 m/sec 0.40 m/sec 0.35 m/sec 0.30 m/sec 0.45 m/sec 0.40 m/sec 0.35 m/sec 0.30 m/sec ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If the depletion of oxygen is found to be 2.5 mg/litre after incubating 2.5 ml of sewage diluted to 250 ml for 5 days at 20°C, B.O.D. of the sewage is 250 mg/l 50 mg/l 100 mg/l 150 mg/l 250 mg/l 50 mg/l 100 mg/l 150 mg/l ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The gradient of sewers depends upon All listed here Discharge Velocity of flow Diameter of the sewer All listed here Discharge Velocity of flow Diameter of the sewer ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The grit chambers of sewage treatment plants, are generally cleaned after 7 days 14 days 12 days 2 days 7 days 14 days 12 days 2 days ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In sewers the effect of scouring is more on Bottom side Top side Horizontal side All sides Bottom side Top side Horizontal side All sides ANSWER DOWNLOAD EXAMIANS APP
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